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(Model.)A A T. H. WHITE.

n INJEGTOR. No. 349,191. Patented Sept. 14, 1886.

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Q. @adv/MW Zyh/sorn/qyd UNITED STATES PATENT, OFFICEo THOMAS H. WHITE, OE SALFORD, MANCHESTER, COUNTY OF LANCASTER, ASSIGNOR TO JOHN HOLROYD, OF MANCHESTER, ENGLAND.

INJ ECTO R.

SFEGIFICATION forming part of Letters Patent No. 349,191, dated September 14, 1886.

Application filed March 9, 1886. Serial No. 194,598, (Modele) Patented in England November 111, 1884, No. 15,015.

T all whom it may concern:

j Beitknown that I, THOMAS HENRY WHITE, a subject of the Queen of Great Britain and Ireland, residing at Salford, Manchester, connty of Lancaster, England, engineer, have invented certain Improvements in Injectors, (for which I have obtained a patent in Great Britain, No. 15,015, November 14, 1884,) of which the following is a specication.

My invention relates to the injectors principally used to feed steam-generators with water; and the principal object of my invention is to render the injector automatic, so that it can be started into operation by simply D admitting'steam to the steam-nozzle. Itt a delivery-tube to slide on the axial line of the injector toward and from the combining-tube- In the accompanying drawing, a is the body of the injector. bis the water-inlet. cis the water-ovcriiowbranch. disthereceiving-cone. eis the steam-nozzle. `fis the combining-cone, and y is thesaid delivery-tube.

The tube g is'fittel to slide easily in the casing and in a seatingin a plug, h, which a carries the receiving-cone and is screwed into the end of the body a. One end, g', of the tube g is turned to a less diameter than the main part of the tube and slides in a contracted part of the bore inthe plug 71.. The end of the part g' opens into a chamber, fi, formed between the part yand the receivingcone, and surrounding the upper end of the said cone. The upper part of the passage in the tube gis coned to suit the passage through the combining-conc f. In the example the tube g is provided with an overfiow-port, k,

which is similar to the ordinary overflow port or passage; but the injector may be made and used without this overiiow. Y

40 When the injector is notin action, the tube g rests at the bottom of its seating, the shoulder between the partsg and g limiting the sliding movement toward the receiving-cone. XVhen in this position, there is a space between the opposed ends of the cone f and the tube g,- but the latter is free to slide toward the former until the two ends meet in contact and for the purposes of the injectorform one tube. The action of the injector is as follows:

5o Vhen steam is admitted to the stcamfnozzle,

water is drawn in and delivered with the steam to the combining-cone, as is usual. Waterissuing from the combining-coneoverflows through the space between that cone and the end of the delivery-tube g, and in the cases wherein the overiiow-port 7c is provided a portion of the water escapes through such port. Water isv also forced into the chamber i, and a pressure is thereby created in this chamber sufficient to force the tube g into contact with the conef by the reaction of the Water upon the end g of the tube. When the ends of the conef and the tube g are thus brought into contact, the overflow-space between'such ends is closed. The pressure within the chamber then becomes in excess of the boiler-press nre, and the water is forced into the receiving-cone d. So soon as the water begins to pass into the receiving-cone water from wit-hin the chamberi is drawn in with the injected 7o stream, so Ythat the said chamber is relieved from pressure and a partial vacuum is formed therein. In some cases I provide the injector with an additional inlet-branch, as indicated by the dotted lines at Z, and thereby admit an additional supply of hot water or water of a suitable temperature, which water is forced along withthe Inain stream of water into the receiving-cone.

I claim 1. The combination of the fixed receivingcone and surrounding chamber, the combining cone, steam-nozzle, and water-supply of an injector with a sliding delivery-tube between the combining-cone and receivingcone, sub- S5 stantially as set forth.

2. The combination of the combining-cone and receiving-cone of an injector with a sliding delivery-tube between the two, a chamber, fi, around the receiving-cone, and a branch 9') water-inlet, Z, leading into the said chamber, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this speci [ication in thc presence of two subscribing witnesses.

THOMAS H. VHITE.

` XVitnesses:

EDWARD K. BUTTON, ARTHUR LEDGER. 

